Advantages and disadvantages of scientific and technological development Conclusion: Although scientific and technological development is important, it cannot be developed on the premise of reasonable and normal use. Development must first purify the mind. Only when no one's mind and soul have been developed and improved, developed high-tech development will permanently benefit human development and natural harmony! Disadvantages: As mentioned above, everyone's eyes are higher and farther, which makes us only see higher things in the distance, to explore and pursue, and ignore what we should do at present. Just like some monarchs in history who want to live forever, they use drugs to treat diseases, and as a result, they blindly invest to realize some impossible things. As a result, they hurt others and themselves, and the macro scene that people see in movies now appears. For example, the development of science and technology not only brings convenience to people, but also brings disaster. Leon: We can go where we want. People are constantly exploring that in the future, the Sun Center Association may be overthrown. With the development of science and technology, no one can enjoy what those historical figures can't enjoy. With the development of economy, the acceleration of people's life rhythm and the improvement of living standards, the amount of plastic used by each new person is increasing day by day. From 65438 to 0996, the consumption of plastic packaging in China reached 2.43 million tons, with an average annual growth rate of more than 20%, especially in the garbage of cities, main traffic arteries and tourist attractions. According to the survey, the annual output of domestic waste in Beijing has reached 3 million tons, of which waste plastics account for about 3%, with an annual growth rate of 48%. The content of plastic in garbage in coastal cities is higher, reaching 8- 10%. The volume ratio of these waste plastics in garbage is more than one third, which greatly increases the difficulty and cost of garbage disposal. Because waste plastics are difficult to degrade for hundreds of years, if discarded in the natural environment, it will provide a hotbed for mosquitoes, flies and bacteria to survive and reproduce; If buried underground, it is easy to pollute groundwater, hinder the growth of plant roots, destroy soil quality and affect crop harvest; If it is burned by fire, it will produce many kinds of toxic gases. "White pollution" has become a major public hazard to China's social environment, which has seriously hindered the sustainable development of China's economy and environment. At present, the annual consumption of disposable tableware in China is about 654.38+000 billion, mainly foam plastic products. In order to stop the production, sale and use of these large-scale disposable foamed plastic tableware, it is necessary to develop and produce their substitutes, and green disposable tableware came into being. Experts believe that the development and production of green disposable tableware is becoming a new environmental protection industry in China. 65438+In mid-February, the Ministry of Science and Technology, together with the State Economic and Trade Commission, the State Environmental Protection Administration and the Ministry of Railways, jointly held an exchange meeting on the development of green primary tableware technology. At the meeting, the reporter interviewed Wang Zhixue, director of China Rural Technology Development Center, and managers of several production enterprises. Wang Zhixue said: At present, the green disposable tableware developed and produced in China can be divided into pulp, rice husk, straw and starch according to the types of raw materials. There are hundreds of enterprises producing paper disposable tableware in China, with an annual production capacity of about 3 billion pieces. The raw materials of paper tableware are seriously polluted in the production process, with high cost, poor strength and waterproof and moisture-proof properties. Therefore, its popularization and application have great limitations, and people will naturally look for the benefits of science and technology from other places. If rice husk is used as raw material to produce rice husk tableware, there are now more than a dozen domestic enterprises of this type, with an annual production capacity of about 654.38+0.5 billion; Straw tableware is mainly made of crop straw. At present, there are more than a dozen domestic manufacturers with an annual production capacity of 75 million units. Starch tableware takes potato starch as the main raw material, which has good biodegradability and can be used as feed after recycling. In short, the state attaches great importance to the research and development of green disposable tableware, and gives strong support through scientific and technological development plans such as scientific and technological research, spark plan and torch plan. The production technology of green disposable tableware in many enterprises is mature and has the foundation of industrialization. Wuhan Far East Green World Group Co., Ltd. is a company that uses starch as raw material to carry out scientific research and development of green disposable tableware, and its economic benefits have begun to take shape. Su Xiaohai, the president of the company, had a legendary experience: he studied arts and crafts in Hubei Institute of Light Industry, went to Wuhan University for a master's degree in philosophy from 65438 to 0984, and then studied and worked in Germany. The environmental protection in Europe touched him greatly, and he had the idea of returning to China to engage in environmental protection industry. Su Xiaohai told reporters: I have studied arts and crafts and am an aesthete. Today's commitment to environmental protection such as green tableware stems from the initial understanding of beauty; The extension of aesthetics, in the final analysis, is also a philosophy. 1992 to 1996, the production scale of recycled cardboard disposable tableware and reed pulp molded tableware developed by Far East Green World Company has not expanded due to the low scientific and technological content. From 65438 to 0996, our company sent personnel to inspect the technical situation of biodegradable packaging products in the European market, and thought that developing vegetable starch to produce fully degradable disposable tableware products might be a way to eliminate "white pollution". 1997, composed of a group of experts in food, chemistry and machinery, focuses on the research and development of fully degradable disposable catering products and is included in the national torch plan project 1997. They absorbed foreign advanced technology and combined with domestic paper tableware production technology to carry out a series of innovations: using starch rich in domestic resources, such as sweet potato and corn, as the main raw materials, instead of single foreign potato starch with higher price; Adding 20% natural fiber to sweet potato starch can obviously increase the strength of tableware, and then adopting food puffing processing technology to make the product light and soft. Through surface spraying treatment and setting equipment to increase strength, the produced catering products have waterproof, oil-proof and heat-resistant functions. Su Xiaohai made a vivid metaphor: this is like reinforced concrete in building materials, sweet potato starch is cement, and the roots of all kinds of hay and plants are reinforced after chopping and stirring, so that the strength of tableware can be obviously enhanced. Starch tableware products produced by Far East Green World are tested by SGS in Germany with reference to international food packaging standards. They are kept in hot water and hot oil at 100℃ for more than two hours without deformation, and their temperature retention performance is excellent. Because starch and additives are natural plant raw materials, the product has excellent degradation performance. Tested by National Environmental Testing Center, it can degrade more than 90% in about 10 day, and can be completely degraded within one month. According to reports, because the project uses plant starch and plant fiber, the cost is low. The cost of each covered lunch box is about 0. 12 yuan, and the cost of uncovered lunch boxes, bowls and plates is about 0.07 yuan, which has a broad market prospect. At present, Far East Green World Company plans to invest 654.38+0.6 billion yuan to build a large-scale fully degradable green disposable tableware production base with an annual output of 5 billion pairs of disposable chopsticks and 3.5 billion bowls, plates and boxes. After the completion of the project, the annual output value can be increased by 625 million yuan, and the new profits and taxes will be about 654.38+300 million yuan. The civil engineering of the base started in March this year, and a standard workshop of 20,000 square meters has been built. If the follow-up funds can be guaranteed, the production is expected to reach 65,438+0 by the end of 1999. Su Xiaohai said: Our scientific and technological advantages are obvious, and so are the social benefits that can be created in the future: disposable sanitary chopsticks made of starch can completely replace disposable wooden chopsticks, and this alone can save the country nearly 500,000 cubic meters of wood resources every year; If the group can reach its production capacity, it is estimated that it will use more than 200,000 tons of sweet potatoes every year and process them into more than 654.38 million tons of starch raw materials, which will also help more than 654.38 million people get rid of poverty in poor areas and promote the development of agricultural industrialization in old areas. In the past few years, Shantou Heng Lv Industrial Co., Ltd. began to develop green disposable tableware made of rice husk, and has initially possessed the ability of industrial scale production. The disposable packaging containers of rice husk produced by the company, especially the food packaging containers used in supermarkets, have been put on trial sale in Japan, Taiwan Province Province and the United States. The green disposable tableware produced by Heng Lv Company is made by crushing and sieving rice husk, then mixing it with several edible organic polymer adhesives in water, and then stamping, drying, spraying and other processes to make dishes, bowls and other utensils with different shapes. Ji, general manager of Commerce Co., Ltd. said: Disposable tableware is made of rice husk, which is not only abundant in China, but also can be degraded quickly in the soil after use, killing two birds with one stone. At present, Heng Lv Company has a production line running, with an investment of about 9.8 million yuan and a production capacity of 400,000 tableware/day, and now it has reached 200,000 tableware/day. The annual output value is about 36 million yuan, the expected payback period is about one and a half years, and the investment profit rate is about 30%. The production technology and product quality have passed the technical appraisal organized by Guangdong Science and Technology Commission and the inspection by the food hygiene department. It is reported that in order to better market its products and standardize its operation, the company plans to set up a group company in the near future and invest in technical transformation to make the production line more automated.